Battery drawing and nothing connected

The only way a battery can discharge is if there is a circuit between the post. So if the battery is disconnected and draining, either the battery is filthy between the post, or the battery is old and something may be wrong with it like a shorted cell. A good battery will still loose its charge if not in use, but recover from a charge, and will maintain a charge once in use.

So I am sorry let me rephrase this nothing is hooked up to the battery but something is drawing power from somewhere

If there are no battery cables hooked up to it then the draw is as described above. You are saying nothing is hooked up to the battery.

Only the pos cable it connected only

There is no circuit with the neg. disconnected from the battery, something is wrong with the battery.

It's a brand new battery that was put in less then 3 weeks ago

But you say you do not have the neg. hooked onto the battery. There is no circuit threw the battery to drain it. A new battery should not drain down without it hooked up.

It's a brand new battery that was put in less then 3 weeks ago my bad when the pos and neg is hooked then there is a train that takes place

Well now that is different. You have a parasitic draw on the battery. You check by taking the neg. cable off and hook up a volt meter between the neg. cable and to the neg post on the battery. There should not be more than 50um amp.draw showing. KEEP the KEY OFF. Then you start pulling the fuses until the draw drops off, then you found the circuit to look at for the draw

ewilliams....did you ever determine what was making your battery to go dead?